Comparison

Harmonica Real Pro vs DJ Kartier

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Harmonica Real Pro

This app simulates a diatonic harmonica, offering various practice modes and features. Learn and play songs with adjustable speed and pitch, and record your performances.

Highlights
  • Diatonic harmonica simulation
  • Offline and online song library
  • Adjustable playback speed
  • Transpose and reverb effects
  • Normal and RealTime play modes
  • Autoplay option
  • Recording and sharing functionality
Features
Read full description

The harmonica, also known as a French harp or mouth organ, is a free reed wind instrument used worldwide in many musical genres, notably in blues, American folk music, classical music, jazz, country, and rock. The many types of harmonica include diatonic, chromatic, tremolo, octave, orchestral, and bass versions. A harmonica is played by using the mouth (lips and tongue) to direct air into or out of one (or more) holes along a mouthpiece. Behind each hole is a chamber containing at least one reed. The most common is the diatonic Richter-tuned with ten air passages and twenty reeds, often called the blues harp. A harmonica reed is a flat, elongated spring typically made of brass, stainless steel, or bronze, which is secured at one end over a slot that serves as an airway. When the free end is made to vibrate by the player's air, it alternately blocks and unblocks the airway to produce sound. Reeds are tuned to individual pitches. Tuning may involve changing a reed's length, the weight near its free end, or the stiffness near its fixed end. Longer, heavier, and springier reeds produce deeper, lower sounds; shorter, lighter, and stiffer reeds make higher-pitched sounds. If, as on most modern harmonicas, a reed is affixed above or below its slot rather than in the plane of the slot, it responds more easily to air flowing in the direction that initially would push it into the slot, i.e., as a closing reed. This difference in response to air direction makes it possible to include both a blow reed and a draw reed in the same air chamber and to play them separately without relying on flaps of plastic or leather (valves, wind-savers) to block the nonplaying reed. An important technique in performance is bending, causing a drop in pitch by making embouchure adjustments. Bending isolated reeds is possible, as on chromatic and other harmonica models with wind-savers, but also to both lower, and raise (overbend, overblow, overdraw) the pitch produced by pairs of reeds in the same chamber, as on a diatonic or other unvalved harmonica. Such two-reed pitch changes actually involve sound production by the normally silent reed, the opening reed (for instance, the blow reed while the player is drawing). (https://en.wikipedia.org/wiki/Harmonica) The Harmonica Real is Diatonic Harmonica musical instrument simulation app. More offline and online songs for practice (With the ability to change speed, transpose, reverb). Play with 2 modes: - Normal - RealTime You can choose autoplay for listening songs. Record feature: record, play back and share to your friends. Reverb feature. ** Songs is updated regularly

About

DJ Kartier

Explore over 1,000 iconic sounds and create music with a full-screen piano or a connected MIDI keyboard. Learn piano with interactive lessons, collaborate with friends in crews, and share your creations with the world.

Highlights
  • 1,000+ iconic sounds
  • Full-screen piano
  • Kartier Studio for song creation
  • Interactive piano lessons
  • Social Crews for collaboration
  • MIDI keyboard connectivity
  • Customizable RGB key lighting
Features
Read full description

The DJ Kartier app puts 1,000+ iconic sounds at your fingertips - famous leads, pianos, synths, brass, and drums inspired by chart-topping hits - all playable right on your phone or with the Kartier Piano MIDI Keyboard Browse by artist, song, or instrument, tap a sound, and play it on a full-screen piano. Every preset is sound-designed accurately, with pro controls so you can make it your own. WHAT YOU CAN DO • Play 1,000+ iconic sounds across genres • Make full songs with Kartier Studio • Post your songs to Creations and share them anywhere • Team up with friends in Crews: chat, play games, and climb the leaderboard together • Learn piano with interactive lessons • Play games, climb the leaderboards, and level up to new ranks • Use the built-in multi-touch piano • Connect your Kartier Piano via bluetooth for full playability • Watch animated video tutorials for hundreds of presets • Control your Kartier Piano's RGB key lighting - rainbow, custom colors, scale guide, and more MAKE SONGS WITH KARTIER STUDIO Build full songs and make your next hit. Layer your tracks, share, and collaborate. Easy and simple to start producing music! CREATIONS: YOUR MUSIC ON THE FEED Post your Kartier Studio songs to Creations, a feed of songs played as falling notes in your own note colors and background. Like, comment, follow your favorite players, and earn XP for posting. Download Creations as videos in Standard, HD, or HD Smooth and share them anywhere. Creations is for players 13 and up. CREWS: SQUAD UP Start a crew with your friends, chat, share your music, and challenge each other to Balls Battle, chess, checkers, cup pong, or pool right in the chat. Send animated stickers and emotes, give your crew its own look, and grow it as you rank up. YOUR KARTIER PROFILE Sign in to keep your lessons, XP, and Phonk Simulator progress on any device, show off your Creations, and claim a name that's yours alone. LEARN TO PLAY WITH INTERACTIVE PIANO LESSONS Follow falling notes across scales, chords, and classic melodies - from Ode to Joy to Canon in D - on your on-screen piano or a connected keyboard. Work through a step-by-step piano course, play chords with more than one finger, and get real-time Perfect/Good/Miss feedback and an accuracy score as you play. Turn any MIDI file or Creation into your own Custom Lesson for free. Start with free lessons, or unlock the full library with Premium. SAFE BY DESIGN Every message, title, and comment is filtered, anything can be reported, and players under 13 get a private mode with Parent controls. PREMIUM • Monthly, annual (save 50%), or one-time lifetime • Unlocks every sound and every lesson, with new sounds added regularly • Premium backgrounds, stickers, and crews MADE BY PRODUCER SUPPLY DJ Kartier is the mobile companion to the Kartier Piano - the fastest way to play the sounds you love, whether you're producing, beatmaking, or just jamming. — All sounds are original recordings inspired by various musical styles. Any artist or song references are descriptive only; no affiliation or endorsement is implied. Subscriptions auto-renew unless cancelled at least 24 hours before the end of the period. Manage or cancel anytime in your App Store account settings. Privacy Policy: https://producersupply.com/pages/dj-kartier-app-privacy-policy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Harmonica Real Pro4 screens
DJ Kartier4 screens

Verdict

The call

The clearest difference is in-app purchases: Harmonica Real Pro at none against DJ Kartier's 3. Harmonica Real Pro also leads on review sentiment (77% vs 47%) and rating (4.8 vs 4.5). DJ Kartier's advantage is ads (none vs shown) and update cadence (every 3 days vs every 5 weeks). On price and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. DJ Kartier sells 3 in-app purchases, starting at $4.99 per month. Harmonica Real Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Harmonica Real Pro holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Harmonica Real Pro has 5.1K ratings behind it against 205, so its average is the more settled of the two. Written reviews point the same way: 77% of Harmonica Real Pro's written reviews are positive against 47% of DJ Kartier's.

UpkeepUpdate frequency

Harmonica Real Pro ships an update every 5 weeks, DJ Kartier every 3 days. The most recent releases landed on November 8, 2026 and November 7, 2026 respectively.

Scorecard9 real differences · 2 level
Harmonica Real Pro versus DJ Kartier: the parameters behind the verdict, then further details
ParameterHarmonica Real ProDJ Kartier
PriceFreeFree
Rating4.8 (5.1K ratings) — better4.5 (205 ratings)
Positive reviews77.3% of reviews — better47.4% of reviews
Number of ratings5.1K — better205
Update frequencyEvery 5 weeksEvery 3 days — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFreemium
Best chart rank—#35 — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better16.0
Further details — not scored
Size100 MB172 MB
Age rating4+9+
DeveloperSon Truong NgocProducer Supply LLC

Customer experience

Harmonica Real Pro

All ratings4,621 ratings
Positive94.2%
Neutral2.5%
Negative3.3%
Written reviews88 reviews
Positive77.3%
Neutral6.8%
Negative15.9%

DJ Kartier

All ratings205 ratings
Positive85.4%
Neutral4.4%
Negative10.2%
Written reviews38 reviews
Positive47.4%
Neutral21.1%
Negative31.6%

In-app purchases

None

Harmonica Real Pro

No in-app purchases

3 purchases

DJ Kartier

Subscriptions2
  • DJ Kartier Premium$4.991 Month
  • DJ Kartier Premium (Annual)$29.991 Year
One-time1
  • DJ Kartier Premium (Lifetime)$79.99

Questions

Is Harmonica Real Pro free?
Harmonica Real Pro is free to download, with no in-app purchases.
Is DJ Kartier free?
DJ Kartier is free to download, with in-app purchases available.
Which has better reviews, Harmonica Real Pro or DJ Kartier?
Harmonica Real Pro is rated higher. Harmonica Real Pro averages 4.8 out of 5 from 5.1K ratings, while DJ Kartier averages 4.5 from 205 ratings.
Do Harmonica Real Pro or DJ Kartier have ads?
Harmonica Real Pro shows ads; DJ Kartier does not.
Which is updated more often, Harmonica Real Pro or DJ Kartier?
Harmonica Real Pro ships an update every 5 weeks, and DJ Kartier every 3 days. Most recently, Harmonica Real Pro was updated on November 8, 2026 and DJ Kartier on November 7, 2026.

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